Home | History | Annotate | Line # | Download | only in dispnv50 
      1 /*	$NetBSD: nouveau_dispnv50_lut.c,v 1.3 2021/12/19 10:49:47 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2018 Red Hat Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  */
     24 #include <sys/cdefs.h>
     25 __KERNEL_RCSID(0, "$NetBSD: nouveau_dispnv50_lut.c,v 1.3 2021/12/19 10:49:47 riastradh Exp $");
     26 
     27 #include "lut.h"
     28 #include "disp.h"
     29 
     30 #include <drm/drm_color_mgmt.h>
     31 #include <drm/drm_mode.h>
     32 #include <drm/drm_property.h>
     33 
     34 #include <nvif/class.h>
     35 
     36 #ifdef __NetBSD__
     37 #define	__iomem		__lut_iomem
     38 #define	readw(p)	atomic_load_relaxed((const __iomem uint16_t *)(p))
     39 #define	writew(v,p)	atomic_store_relaxed((__iomem uint16_t *)(p), (v))
     40 #endif
     41 
     42 u32
     43 nv50_lut_load(struct nv50_lut *lut, int buffer, struct drm_property_blob *blob,
     44 	      void (*load)(struct drm_color_lut *, int, void __iomem *))
     45 {
     46 	struct drm_color_lut *in = blob ? blob->data : NULL;
     47 	void __iomem *mem = lut->mem[buffer].object.map.ptr;
     48 	const u32 addr = lut->mem[buffer].addr;
     49 	int i;
     50 
     51 	if (!in) {
     52 		in = kvmalloc_array(1024, sizeof(*in), GFP_KERNEL);
     53 		if (!WARN_ON(!in)) {
     54 			for (i = 0; i < 1024; i++) {
     55 				in[i].red   =
     56 				in[i].green =
     57 				in[i].blue  = (i << 16) >> 10;
     58 			}
     59 			load(in, 1024, mem);
     60 			kvfree(in);
     61 		}
     62 	} else {
     63 		load(in, drm_color_lut_size(blob), mem);
     64 	}
     65 
     66 	return addr;
     67 }
     68 
     69 void
     70 nv50_lut_fini(struct nv50_lut *lut)
     71 {
     72 	int i;
     73 	for (i = 0; i < ARRAY_SIZE(lut->mem); i++)
     74 		nvif_mem_fini(&lut->mem[i]);
     75 }
     76 
     77 int
     78 nv50_lut_init(struct nv50_disp *disp, struct nvif_mmu *mmu,
     79 	      struct nv50_lut *lut)
     80 {
     81 	const u32 size = disp->disp->object.oclass < GF110_DISP ? 257 : 1025;
     82 	int i;
     83 	for (i = 0; i < ARRAY_SIZE(lut->mem); i++) {
     84 		int ret = nvif_mem_init_map(mmu, NVIF_MEM_VRAM, size * 8,
     85 					    &lut->mem[i]);
     86 		if (ret)
     87 			return ret;
     88 	}
     89 	return 0;
     90 }
     91